<template>
  <div>
    <!-- 面包屑导航 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>参数列表</el-breadcrumb-item>
    </el-breadcrumb>
    <el-card>
      <!-- 头部警告驱 -->
      <el-alert title="注意：只允许为第三级分类设置相关参数！" type="warning" :closable="false" show-icon></el-alert>
      <!-- 选择商品分类区 -->
      <el-row class="cat-opt">
        <el-col>
          <span>选择商品分类：</span>
          <!-- 选择商品分类的级联选择器 -->
          <el-cascader
            v-model="selectCatekeys"
            :options="catelist"
            :props="cateProps"
            @change="handleChange"
          ></el-cascader>
        </el-col>
      </el-row>
      <!-- tab区 -->
      <el-tabs v-model="activeName" @tab-click="handleTabClick">
        <el-tab-pane label="动态参数" name="many">
          <el-button
            type="primary"
            size="mini"
            :disabled="isBtnDistable"
            @click="addDialogVisible=true"
          >添加参数</el-button>
          <el-table :data="manyTableData" border siripe>
            <!-- 展开行 -->
            <el-table-column type="expand">
              <template slot-scope="scope">
                <!-- 循环渲染tag标签 -->
                <el-tag v-for="(item, i) in scope.row.attr_vals" :key="i" closable @close="handleClose(i, scope.row)">{{item}}</el-tag>
                <!-- 输入的文本框 -->
                <el-input
                  class="input-new-tag"
                  v-if="scope.row.inputVisible"
                  v-model="scope.row.inputValue"
                  ref="saveTagInput"
                  size="small"
                  @keyup.enter.native="handleInputConfirm(scope.row)"
                  @blur="handleInputConfirm(scope.row)"
                ></el-input>
                <!-- 添加的按钮 -->
                <el-button v-else class="button-new-tag" size="small" @click="showInput(scope.row)">+ New Tag</el-button>
              </template>
            </el-table-column>
            <!-- 索引 -->
            <el-table-column type="index"></el-table-column>
            <el-table-column label="参数名称" prop="attr_name"></el-table-column>
            <el-table-column label="操作">
              <template slot-scope="scope">
                <el-button
                  type="primary"
                  icon="el-icon-edit"
                  size="mini"
                  @click="showEditDialog(scope.row.attr_id)"
                >编辑</el-button>
                <el-button
                  type="danger"
                  icon="el-icon-delete"
                  size="mini"
                  @click="remveParam(scope.row.attr_id)"
                >删除</el-button>
              </template>
            </el-table-column>
          </el-table>
        </el-tab-pane>
        <el-tab-pane label="静态属性" name="only">
          <el-button
            type="primary"
            size="mini"
            :disabled="isBtnDistable"
            @click="addDialogVisible=true"
          >添加属性</el-button>
          <!-- 静态属性表格 -->
          <el-table :data="onlyTableData" border siripe>
            <!-- 展开行 -->
             <el-table-column type="expand">
              <template slot-scope="scope">
                <!-- 循环渲染tag标签 -->
                <el-tag v-for="(item, i) in scope.row.attr_vals" :key="i" closable @close="handleClose(i, scope.row)">{{item}}</el-tag>
                <!-- 输入的文本框 -->
                <el-input
                  class="input-new-tag"
                  v-if="scope.row.inputVisible"
                  v-model="scope.row.inputValue"
                  ref="saveTagInput"
                  size="small"
                  @keyup.enter.native="handleInputConfirm(scope.row)"
                  @blur="handleInputConfirm(scope.row)"
                ></el-input>
                <!-- 添加的按钮 -->
                <el-button v-else class="button-new-tag" size="small" @click="showInput(scope.row)">+ New Tag</el-button>
              </template>
            </el-table-column>
            <!-- 索引 -->
            <el-table-column type="index"></el-table-column>
            <el-table-column label="属性名称" prop="attr_name"></el-table-column>
            <el-table-column label="操作">
              <template slot-scope="scope">
                <el-button
                  type="primary"
                  icon="el-icon-edit"
                  size="mini"
                  @click="showEditDialog(scope.row.attr_id)"
                >编辑</el-button>
                <el-button
                  type="danger"
                  icon="el-icon-delete"
                  size="mini"
                  @click="remveParam(scope.row.attr_id)"
                >删除</el-button>
              </template>
            </el-table-column>
          </el-table>
        </el-tab-pane>
      </el-tabs>
    </el-card>
    <!-- 添加参数的对话框 -->
    <el-dialog
      :title="'添加' + titleText"
      :visible.sync="addDialogVisible"
      width="50%"
      @close="addDialogClosed"
    >
      <el-form ref="addFormRef" :model="addFrom" :rules="addFromRules" label-width="100px">
        <el-form-item :label="titleText" prop="attr_name">
          <el-input v-model="addFrom.attr_name"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addParams">确 定</el-button>
      </span>
    </el-dialog>
    <!-- 修改对话框 -->
    <el-dialog
      :title="'修改' + titleText"
      :visible.sync="editDialogVisible"
      width="50%"
      @close="editDialogClosed"
    >
      <el-form ref="editFormRef" :model="editFrom" :rules="editFromRules" label-width="100px">
        <el-form-item :label="titleText" prop="attr_name">
          <el-input v-model="editFrom.attr_name"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editParams">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>
<script>
export default {
  data() {
    return {
      catelist: [],
      //级联配置对象
      cateProps: {
        expandTrigger: "hover",
        value: "cat_id",
        label: "cat_name",
        children: "children",
      },
      //级联选择框双向绑定的数组
      selectCatekeys: [],
      activeName: "many",
      manyTableData: [],
      onlyTableData: [],
      // 控制添加对哈克的显示与隐藏
      addDialogVisible: false,
      // 添加参数的表单对象
      addFrom: {},
      // 添加表单规则
      addFromRules: {
        attr_name: [
          { required: true, message: "请输入参数名称", trigger: "blur" },
        ],
      },
      // 控制修改框的显示
      editDialogVisible: false,
      //修改表单的数据对象
      editFrom: {},
      // 修改表单规则
      editFromRules: {
        attr_name: [
          { required: true, message: "请输入参数名称", trigger: "blur" },
        ],
      }
      // // 控制按钮与文本的切换显示
      // inputVisible: false,
      // // 文本框中输入的内容
      // inputValue: ''

    };
  },
  created() {
    this.getCateList();
  },
  methods: {
    //获取所有的商品分类列表
    async getCateList() {
      const { data: res } = await this.$http.get("categories");
      if (res.meta.status !== 200) {
        return this.$message.console.error("获取商品分类失败！");
      }
      this.catelist = res.data;
      console.log(this.catelist);
    },
    //级联选择框选中会变化
    handleChange() {
      this.getParamsData();
    },
    //tab页签点击事件的处理函数
    handleTabClick() {
      //console.log(this.activeName)
      this.getParamsData();
    },
    //获取参数的列表数据
    async getParamsData() {
      //console.log(this.selectCatekeys)
      if (this.selectCatekeys.length !== 3) {
        this.selectCatekeys = [];
        this.manyTableData = []
        this.onlyTableData = []
        return;
      }
      //console.log(this.selectCatekeys);
      //根据所选分类的id获取对应的参数
      const { data: res } = await this.$http.get(
        `categories/${this.cateId}/attributes`,
        {
          params: { sel: this.activeName },
        }
      );
      if (res.meta.status !== 200) {
        return this.$message.error("获取参数列表失败");
      }
      //console.log(res.data);
      res.data.forEach((item) => {
        item.attr_vals = item.attr_vals ? item.attr_vals.split(" ") : [];
        // 控制文本框的显示与隐藏
        item.inputVisible = false
        // 文本框中的输入值
        item.inputValue = ''
      });
      console.log(res.data);
      if (this.activeName === "many") {
        this.manyTableData = res.data;
      } else {
        this.onlyTableData = res.data;
      }
    },
    // 监听对话框的关闭事件
    addDialogClosed() {
      this.$refs.addFormRef.resetFields();
    },
    // 显示添加参数对话框
    addParams() {
      //表单预验证
      this.$refs.addFormRef.validate(async (valid) => {
        if (!valid) return;
        const { data: res } = await this.$http.post(
          `categories/${this.cateId}/attributes`,
          {
            attr_name: this.addFrom.attr_name,
            attr_sel: this.activeName,
          }
        );
        if (res.meta.status !== 201) {
          return this.$message.error("添加参数失败！");
        }
        this.$message.success("添加参数成功！");
        this.addDialogVisible = false;
        this.getParamsData();
      });
    },
    // 点击按钮显示修改对话框
    async showEditDialog(attr_id) {
      // 查询当前参数的信息

      const { data: res } = await this.$http.get(
        `categories/${this.cateId}/attributes/${attr_id}`,
        {
          params: { attr_sel: this.activeName },
        }
      );
      if (res.meta.status !== 200) {
        return this.$message.error("获取参数失败！");
      }
      this.editFrom = res.data;
      this.editDialogVisible = true;
    },
    //重置修改表单
    editDialogClosed() {
      this.$refs.editFormRef.resetields();
    },
    // 点击按钮修改参数
    editParams() {
      this.$refs.editFormRef.validate(async (valid) => {
        if (!valid) return;
        this.editDialogVisible = false;
        // const {data: res} = await this.$http.put(`categories/${this.cateId}/attributes/${this.editForm.attr_id}`,{
        //  attr_name: this.editForm.attr_name,
        //  attr_sel: this.activeName
        // })
        const {
          data: res,
        } = await this.$http.put(
          `categories/${this.cateId}/attributes/${this.editFrom.attr_id}`,
          { attr_name: this.editFrom.attr_name, attr_sel: this.activeName }
        );

        if (res.meta.status !== 200) {
          return this.$message.error("修改数据失败");
        }
        this.$message.success("修改数据成功");
        this.getParamsData();
        this.editDialogVisible = false;
      });
    },
    // 删除属性
    async remveParam(attr_Id) {
      const confirmResult = await this.$confirm(
        "此操作将永久该属性, 是否继续?",
        "提示",
        {
          confirmButtonText: "确定",
          cancelButtonText: "取消",
          type: "warning",
        }
      ).catch((err) => err);
      //用户取消了删除的操作
      if (confirmResult !== "confirm") {
        return this.$message.info("已取消删除！");
      }
      //删除的业务逻辑
      const { data: res } = await this.$http.delete(
        `categories/${this.cateId}/attributes/${attr_Id}`
      );
      if (res.meta.status !== 200) {
        return this.$message.error("删除数据失败");
      }
      this.$message.success("删除数据成功");
      this.getParamsData();
    },
    // 文本框失去焦点， 或者Enter都会触发
    async handleInputConfirm(row) {
      console.log('ok')
      row.inputVisible = false
      if(row.inputValue.trim().length === 0) {
        row.inputValue = ''
        row.inputVisible = false
        return
      }
      // 如果没有return则输入的内容需要进行后续处理
      // row.attr_vals.push(row.inputValue.trim())
      //  row.inputValue = ''
      // row.inputVisible = false
      // const {data: res} = await this.$http.put(`categories/${this.cateId}/attributes/${row.attr_id}`, {
      //   attr_name: row.attr_name,
      //   attr_sel: row.attr_sel,
      //   attr_vals: row.attr_vals.join(' ')
      // })
      // if(res.meta.status !== 200){
      //   return this.$message.error('修改参数失败')
      // }
      // this.$message.success('修改参数成功')
      this.saceAttrVals(row)
    },
    //将对attr的操作保存到数据库
    async saceAttrVals(row) {
      const {data: res} = await this.$http.put(`categories/${this.cateId}/attributes/${row.attr_id}`, {
        attr_name: row.attr_name,
        attr_sel: row.attr_sel,
        attr_vals: row.attr_vals.join(' ')
      })
      if(res.meta.status !== 200){
        return this.$message.error('修改参数失败')
      }
      this.$message.success('修改参数成功')
    },
    // 点击按钮，展示文本输入框
    showInput(row) {
      row.inputVisible = true
      //让文本框自动获得焦点$nextTick当页面上的元素被重新渲染之后，才会回调函数的代码
      this.$nextTick(_ => {
          this.$refs.saveTagInput.$refs.input.focus();
        });
    },
    handleClose(i, row) {
      row.attr_vals.splice(i, 1)
      this.saceAttrVals(row)
    }
  },

  computed: {
    //按钮的禁用
    isBtnDistable() {
      if (this.selectCatekeys.length !== 3) {
        return true;
      }
      return false;
    },
    //当前选中的三级id
    cateId() {
      if (this.selectCatekeys.length === 3) {
        return this.selectCatekeys[2];
      }
      return null;
    },
    // 动态计算标题文本
    titleText() {
      if (this.activeName === "many") {
        return "动态参数";
      }
      return "静态参数";
    },
  },
};
</script>
<style lang="less" scoped>
.cat-opt {
  margin: 15px 0;
}
.el-tag {
  margin: 10px;
}
.input-new-tag{
  width: 120px;
}
</style>